package com.zzyl.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.date.LocalDateTimeUtil;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.zzyl.base.PageBean;
import com.zzyl.dto.ReservationDto;
import com.zzyl.dto.ReservationQueryDto;
import com.zzyl.entity.Reservation;
import com.zzyl.mapper.ReservationMapper;
import com.zzyl.service.ReservationService;
import com.zzyl.utils.ThreadLocalUtil;
import com.zzyl.vo.ReservationVo;
import com.zzyl.vo.TimeCountVo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.*;
import java.util.List;

@Slf4j
@Service
@Transactional
public class ReservationServiceImpl implements ReservationService {

    @Autowired
    private ReservationMapper reservationMapper;

    /**
     * 分页查找预约 (小程序端)
     */
    @Override
    public PageBean<ReservationVo> findByPage4Customer(ReservationQueryDto dto) {
        PageHelper.startPage(dto.getPageNum(), dto.getPageSize());
        Long userId = ThreadLocalUtil.get();
        dto.setUserId(userId);
        Page<Reservation> page = reservationMapper.findByPage(dto);
        return PageBean.of(page, ReservationVo.class);
    }

    /**
     * 分页查找预约 (管理端)
     */
    @Override
    public PageBean<ReservationVo> findByPage4Manager(ReservationQueryDto dto) {
        PageHelper.startPage(dto.getPageNum(), dto.getPageSize());
        Page<Reservation> page = reservationMapper.findByPage(dto);
        return PageBean.of(page, ReservationVo.class);
    }

    /**
     * 查询取消预约数量
     *
     * @return
     */
    @Override
    public Integer getCancelledCount() {
        Long userId = ThreadLocalUtil.get();
        LocalDateTime start = LocalDateTime.now().with(LocalTime.MIN);      //当天时间零点
        LocalDateTime end = LocalDateTime.now().with(LocalTime.MAX);        //当天时间终点
        int cancelledCount = reservationMapper.getCancelledCount(start, end, userId);
        return cancelledCount;
    }

    /**
     * 查询每个时段的预约数量
     *
     * @param time
     * @return
     */
    @Override
    public List<TimeCountVo> getCountByTime(Long time) {
        LocalDateTime start = LocalDateTimeUtil.of(time).with(LocalTime.MIN);   //当天时间零点
        LocalDateTime end = LocalDateTimeUtil.of(time).with(LocalTime.MAX);     //当天时间终点
        List<TimeCountVo> timeCountVos = reservationMapper.countByTimeRange(start,end);

        return timeCountVos;
    }

    /**
     * 新增预约
     *
     * @param dto
     */
    @Override
    public void addReservation(ReservationDto dto) {
        Reservation reservation = BeanUtil.toBean(dto, Reservation.class);
        reservation.setStatus(0);       //0:待报道  1:已完成  2:取消  3:过期
        reservationMapper.insert(reservation);
    }

    /**
     * 取消预约(更新预约表的状态）
     *
     * @param id
     */
    @Override
    public void cancelReservation(Long id) {
        Reservation reservation = Reservation.builder()
                .id(id)
                .status(2)
                .build();

        reservationMapper.update(reservation);
    }
}

